Sen. Mark Begich, left, and his Republican challenger, former state attorney general Dan Sullivan, tangled Wednesday night Oct. 1, 2014 at a debate on fishing issues in a high school auditorium in Kodiak, Alaska. The Republican U.S. Senate candidate Sullivan was grilled on his positions on fishing issues during a debate with Democratic Sen. Mark Begich in one of the largest ports in the U.S. Fishing is Alaska's top industry and employs about one-tenth of the state's population. (AP Photo/